PGR5 Is Involved in Cyclic Electron Flow around Photosystem I and Is Essential for Photoprotection in Arabidopsis
During photosynthesis, plants must control the utilization of light energy in order to avoid photoinhibition. We isolated an Arabidopsis mutant, pgr5 ( proton gradient regulation), in which downregulation of photosystem II photochemistry in response to intense light was impaired. PGR5 encodes a nove...
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| Veröffentlicht in: | Cell 2002-08, Vol.110 (3), p.361-371 |
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| creator | Munekage, Yuri Hojo, Masaya Meurer, Jörg Endo, Tsuyoshi Tasaka, Masao Shikanai, Toshiharu |
| description | During photosynthesis, plants must control the utilization of light energy in order to avoid photoinhibition. We isolated an
Arabidopsis mutant,
pgr5 (
proton gradient regulation), in which downregulation of photosystem II photochemistry in response to intense light was impaired.
PGR5 encodes a novel thylakoid membrane protein that is involved in the transfer of electrons from ferredoxin to plastoquinone. This alternative electron transfer pathway, whose molecular identity has long been unclear, is known to function in vivo in cyclic electron flow around photosystem I. We propose that the PGR5 pathway contributes to the generation of a ΔpH that induces thermal dissipation when Calvin cycle activity is reduced. Under these conditions, the PGR5 pathway also functions to limit the overreduction of the acceptor side of photosystem I, thus preventing photosystem I photoinhibition. |
| doi_str_mv | 10.1016/S0092-8674(02)00867-X |
| format | Article |
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Arabidopsis mutant,
pgr5 (
proton gradient regulation), in which downregulation of photosystem II photochemistry in response to intense light was impaired.
PGR5 encodes a novel thylakoid membrane protein that is involved in the transfer of electrons from ferredoxin to plastoquinone. This alternative electron transfer pathway, whose molecular identity has long been unclear, is known to function in vivo in cyclic electron flow around photosystem I. We propose that the PGR5 pathway contributes to the generation of a ΔpH that induces thermal dissipation when Calvin cycle activity is reduced. Under these conditions, the PGR5 pathway also functions to limit the overreduction of the acceptor side of photosystem I, thus preventing photosystem I photoinhibition.</description><identifier>ISSN: 0092-8674</identifier><identifier>EISSN: 1097-4172</identifier><identifier>DOI: 10.1016/S0092-8674(02)00867-X</identifier><identifier>PMID: 12176323</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><subject>Amino Acid Sequence - genetics ; Arabidopsis - cytology ; Arabidopsis - genetics ; Arabidopsis - metabolism ; Arabidopsis Proteins - genetics ; Arabidopsis Proteins - isolation & purification ; Arabidopsis Proteins - radiation effects ; Base Sequence - genetics ; Carbon Dioxide - metabolism ; Cell Respiration - genetics ; Cell Respiration - radiation effects ; Chlorophyll - genetics ; Chlorophyll - metabolism ; Chlorophyll - radiation effects ; Electron Transport - genetics ; Electron Transport - radiation effects ; Gene Expression Regulation, Plant - physiology ; Gene Expression Regulation, Plant - radiation effects ; Light - adverse effects ; Light-Harvesting Protein Complexes ; Macromolecular Substances ; Molecular Sequence Data ; Mutation - genetics ; Mutation - radiation effects ; NADP - genetics ; NADP - metabolism ; NADP - radiation effects ; Oxidation-Reduction - radiation effects ; Oxygen - metabolism ; Photic Stimulation - adverse effects ; Photosynthesis - genetics ; Photosynthesis - radiation effects ; Photosynthetic Reaction Center Complex Proteins - genetics ; Photosynthetic Reaction Center Complex Proteins - isolation & purification ; Photosynthetic Reaction Center Complex Proteins - metabolism ; Photosynthetic Reaction Center Complex Proteins - radiation effects ; Photosystem I Protein Complex ; Photosystem II Protein Complex ; Thylakoids - genetics ; Thylakoids - metabolism ; Thylakoids - radiation effects</subject><ispartof>Cell, 2002-08, Vol.110 (3), p.361-371</ispartof><rights>2002 Cell Press</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c557t-ffb832fb2a053f7031940cc72fefa28c5f8de0a0a62cd02b7def4a82339e075b3</citedby><cites>FETCH-LOGICAL-c557t-ffb832fb2a053f7031940cc72fefa28c5f8de0a0a62cd02b7def4a82339e075b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/S0092-8674(02)00867-X$$EHTML$$P50$$Gelsevier$$Hfree_for_read</linktohtml><link.rule.ids>314,780,784,3548,27922,27923,45993</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/12176323$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Munekage, Yuri</creatorcontrib><creatorcontrib>Hojo, Masaya</creatorcontrib><creatorcontrib>Meurer, Jörg</creatorcontrib><creatorcontrib>Endo, Tsuyoshi</creatorcontrib><creatorcontrib>Tasaka, Masao</creatorcontrib><creatorcontrib>Shikanai, Toshiharu</creatorcontrib><title>PGR5 Is Involved in Cyclic Electron Flow around Photosystem I and Is Essential for Photoprotection in Arabidopsis</title><title>Cell</title><addtitle>Cell</addtitle><description>During photosynthesis, plants must control the utilization of light energy in order to avoid photoinhibition. We isolated an
Arabidopsis mutant,
pgr5 (
proton gradient regulation), in which downregulation of photosystem II photochemistry in response to intense light was impaired.
PGR5 encodes a novel thylakoid membrane protein that is involved in the transfer of electrons from ferredoxin to plastoquinone. This alternative electron transfer pathway, whose molecular identity has long been unclear, is known to function in vivo in cyclic electron flow around photosystem I. We propose that the PGR5 pathway contributes to the generation of a ΔpH that induces thermal dissipation when Calvin cycle activity is reduced. Under these conditions, the PGR5 pathway also functions to limit the overreduction of the acceptor side of photosystem I, thus preventing photosystem I photoinhibition.</description><subject>Amino Acid Sequence - genetics</subject><subject>Arabidopsis - cytology</subject><subject>Arabidopsis - genetics</subject><subject>Arabidopsis - metabolism</subject><subject>Arabidopsis Proteins - genetics</subject><subject>Arabidopsis Proteins - isolation & purification</subject><subject>Arabidopsis Proteins - radiation effects</subject><subject>Base Sequence - genetics</subject><subject>Carbon Dioxide - metabolism</subject><subject>Cell Respiration - genetics</subject><subject>Cell Respiration - radiation effects</subject><subject>Chlorophyll - genetics</subject><subject>Chlorophyll - metabolism</subject><subject>Chlorophyll - radiation effects</subject><subject>Electron Transport - genetics</subject><subject>Electron Transport - radiation effects</subject><subject>Gene Expression Regulation, Plant - physiology</subject><subject>Gene Expression Regulation, Plant - radiation effects</subject><subject>Light - adverse effects</subject><subject>Light-Harvesting Protein Complexes</subject><subject>Macromolecular Substances</subject><subject>Molecular Sequence Data</subject><subject>Mutation - genetics</subject><subject>Mutation - radiation effects</subject><subject>NADP - genetics</subject><subject>NADP - metabolism</subject><subject>NADP - radiation effects</subject><subject>Oxidation-Reduction - radiation effects</subject><subject>Oxygen - metabolism</subject><subject>Photic Stimulation - adverse effects</subject><subject>Photosynthesis - genetics</subject><subject>Photosynthesis - radiation effects</subject><subject>Photosynthetic Reaction Center Complex Proteins - genetics</subject><subject>Photosynthetic Reaction Center Complex Proteins - isolation & purification</subject><subject>Photosynthetic Reaction Center Complex Proteins - metabolism</subject><subject>Photosynthetic Reaction Center Complex Proteins - radiation effects</subject><subject>Photosystem I Protein Complex</subject><subject>Photosystem II Protein Complex</subject><subject>Thylakoids - genetics</subject><subject>Thylakoids - metabolism</subject><subject>Thylakoids - radiation effects</subject><issn>0092-8674</issn><issn>1097-4172</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2002</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkdFKHDEUhkOp6Nb6CC25KvZi6kmymcxcFVlWXRAUq-BdyCQnNGV2siazK_v2Rnexl14lhO87J_w_Id8Y_GLA6rM_AC2vmlpNT4H_BCi36vETmTBoVTVlin8mk3fkiHzJ-R8USkp5SI4YZ6oWXEzI0-3lnaSLTBfDJvYbdDQMdLa1fbB03qMdUxzoRR-fqUlxPTh6-zeOMW_ziEu6oKa8FHmeMw5jMD31Me2QVYpj0UPRy8TzZLrg4iqH_JUceNNnPNmfx-ThYn4_u6quby4Xs_Prykqpxsr7rhHcd9yAFF6BYO0UrFXcoze8sdI3DsGAqbl1wDvl0E9Nw4VoEZTsxDH5sZtbfvK0xjzqZcgW-94MGNdZKw5Qq1Z-CLKmlrUQqoByB9oUc07o9SqFpUlbzUC_lqLfStGviWvg-q0U_Vi87_sF626J7r-1b6EAv3cAljw2AZPONuBg0YVUMtQuhg9WvACXKJ0e</recordid><startdate>20020809</startdate><enddate>20020809</enddate><creator>Munekage, Yuri</creator><creator>Hojo, Masaya</creator><creator>Meurer, Jörg</creator><creator>Endo, Tsuyoshi</creator><creator>Tasaka, Masao</creator><creator>Shikanai, Toshiharu</creator><general>Elsevier Inc</general><scope>6I.</scope><scope>AAFTH</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>FR3</scope><scope>P64</scope><scope>RC3</scope><scope>7X8</scope></search><sort><creationdate>20020809</creationdate><title>PGR5 Is Involved in Cyclic Electron Flow around Photosystem I and Is Essential for Photoprotection in Arabidopsis</title><author>Munekage, Yuri ; Hojo, Masaya ; Meurer, Jörg ; Endo, Tsuyoshi ; Tasaka, Masao ; Shikanai, Toshiharu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c557t-ffb832fb2a053f7031940cc72fefa28c5f8de0a0a62cd02b7def4a82339e075b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2002</creationdate><topic>Amino Acid Sequence - genetics</topic><topic>Arabidopsis - cytology</topic><topic>Arabidopsis - genetics</topic><topic>Arabidopsis - metabolism</topic><topic>Arabidopsis Proteins - genetics</topic><topic>Arabidopsis Proteins - isolation & purification</topic><topic>Arabidopsis Proteins - radiation effects</topic><topic>Base Sequence - genetics</topic><topic>Carbon Dioxide - metabolism</topic><topic>Cell Respiration - genetics</topic><topic>Cell Respiration - radiation effects</topic><topic>Chlorophyll - genetics</topic><topic>Chlorophyll - metabolism</topic><topic>Chlorophyll - radiation effects</topic><topic>Electron Transport - genetics</topic><topic>Electron Transport - radiation effects</topic><topic>Gene Expression Regulation, Plant - physiology</topic><topic>Gene Expression Regulation, Plant - radiation effects</topic><topic>Light - adverse effects</topic><topic>Light-Harvesting Protein Complexes</topic><topic>Macromolecular Substances</topic><topic>Molecular Sequence Data</topic><topic>Mutation - genetics</topic><topic>Mutation - radiation effects</topic><topic>NADP - genetics</topic><topic>NADP - metabolism</topic><topic>NADP - radiation effects</topic><topic>Oxidation-Reduction - radiation effects</topic><topic>Oxygen - metabolism</topic><topic>Photic Stimulation - adverse effects</topic><topic>Photosynthesis - genetics</topic><topic>Photosynthesis - radiation effects</topic><topic>Photosynthetic Reaction Center Complex Proteins - genetics</topic><topic>Photosynthetic Reaction Center Complex Proteins - isolation & purification</topic><topic>Photosynthetic Reaction Center Complex Proteins - metabolism</topic><topic>Photosynthetic Reaction Center Complex Proteins - radiation effects</topic><topic>Photosystem I Protein Complex</topic><topic>Photosystem II Protein Complex</topic><topic>Thylakoids - genetics</topic><topic>Thylakoids - metabolism</topic><topic>Thylakoids - radiation effects</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Munekage, Yuri</creatorcontrib><creatorcontrib>Hojo, Masaya</creatorcontrib><creatorcontrib>Meurer, Jörg</creatorcontrib><creatorcontrib>Endo, Tsuyoshi</creatorcontrib><creatorcontrib>Tasaka, Masao</creatorcontrib><creatorcontrib>Shikanai, Toshiharu</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Genetics Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Cell</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Munekage, Yuri</au><au>Hojo, Masaya</au><au>Meurer, Jörg</au><au>Endo, Tsuyoshi</au><au>Tasaka, Masao</au><au>Shikanai, Toshiharu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>PGR5 Is Involved in Cyclic Electron Flow around Photosystem I and Is Essential for Photoprotection in Arabidopsis</atitle><jtitle>Cell</jtitle><addtitle>Cell</addtitle><date>2002-08-09</date><risdate>2002</risdate><volume>110</volume><issue>3</issue><spage>361</spage><epage>371</epage><pages>361-371</pages><issn>0092-8674</issn><eissn>1097-4172</eissn><abstract>During photosynthesis, plants must control the utilization of light energy in order to avoid photoinhibition. We isolated an
Arabidopsis mutant,
pgr5 (
proton gradient regulation), in which downregulation of photosystem II photochemistry in response to intense light was impaired.
PGR5 encodes a novel thylakoid membrane protein that is involved in the transfer of electrons from ferredoxin to plastoquinone. This alternative electron transfer pathway, whose molecular identity has long been unclear, is known to function in vivo in cyclic electron flow around photosystem I. We propose that the PGR5 pathway contributes to the generation of a ΔpH that induces thermal dissipation when Calvin cycle activity is reduced. Under these conditions, the PGR5 pathway also functions to limit the overreduction of the acceptor side of photosystem I, thus preventing photosystem I photoinhibition.</abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>12176323</pmid><doi>10.1016/S0092-8674(02)00867-X</doi><tpages>11</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Amino Acid Sequence - genetics Arabidopsis - cytology Arabidopsis - genetics Arabidopsis - metabolism Arabidopsis Proteins - genetics Arabidopsis Proteins - isolation & purification Arabidopsis Proteins - radiation effects Base Sequence - genetics Carbon Dioxide - metabolism Cell Respiration - genetics Cell Respiration - radiation effects Chlorophyll - genetics Chlorophyll - metabolism Chlorophyll - radiation effects Electron Transport - genetics Electron Transport - radiation effects Gene Expression Regulation, Plant - physiology Gene Expression Regulation, Plant - radiation effects Light - adverse effects Light-Harvesting Protein Complexes Macromolecular Substances Molecular Sequence Data Mutation - genetics Mutation - radiation effects NADP - genetics NADP - metabolism NADP - radiation effects Oxidation-Reduction - radiation effects Oxygen - metabolism Photic Stimulation - adverse effects Photosynthesis - genetics Photosynthesis - radiation effects Photosynthetic Reaction Center Complex Proteins - genetics Photosynthetic Reaction Center Complex Proteins - isolation & purification Photosynthetic Reaction Center Complex Proteins - metabolism Photosynthetic Reaction Center Complex Proteins - radiation effects Photosystem I Protein Complex Photosystem II Protein Complex Thylakoids - genetics Thylakoids - metabolism Thylakoids - radiation effects |
| title | PGR5 Is Involved in Cyclic Electron Flow around Photosystem I and Is Essential for Photoprotection in Arabidopsis |
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